A threaded rod and nut arrangement are guided with two washers, upper and lower washers tightened into a base plate. Considering that the base plate carries a load of 120 kN including its self-weight which is distributed equally: a. Determine the stress on the lower washers before the buts are tightened. b. Determine the stress int the upper washer when the nuts are tightened so as to produce a tension of 5kN on the bolt. c. Determine the stress int the lower washer when the nuts are tightened so as to produce a tension of 5kN on the bolt. 44 mm- Upper washer Base plate

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Electric Circuit and Components

An electrical circuit or electrical network is a pre-determined pathway to make the electrons flow in the desired direction. The flow of electrons will set up a current flow in the circuit. Normally, the flow of electrical current is opposite to the flow of electrons. An electron is a fundamental sub-atomic particle of an atom possessing a negative charge. To initiate the flow of current and achieve the desired output, the electrical circuit should necessarily be composed of closed pathways. The pathways are made-up of good conductors of electricity such as aluminium and copper.